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Borate sulfates are mixed anion compounds containing separate borate and sulfate anions. They are distinct from the borosulfates where the borate is linked to a sulfate via a common oxygen atom.
chem | mw | crystal system | space group | unit cell Å | volume | density | comment | references | |
---|---|---|---|---|---|---|---|---|---|
sulfoborite | Mg3(OH)[B(OH)4]2(SO4)F | orthorhombic | Pnma | a=10.132 b=12.537 c=7.775 | 987.6 | Biaxial (-) nα = 1.527 nβ = 1.536 nγ = 1.551
2V 79° Max birefringence δ = 0.024 |
[1] | ||
Heidornite | Na2Ca3B5O8(OH)2(SO4)2Cl | monoclinic | C2/c | a = 10.19, b = 7.76, c = 18.81
β = 93.33° Z=4 |
1,485 | 2.753 | Biaxial (+) nα = 1.579 nβ = 1.588 nγ = 1.604
2V 63° to 77° Max birefringence δ = 0.025 |
[2] | |
Charlesite | Ca6Al(SO4)2B(OH)4(O,OH)12•26H2O | trigonal | P31c | a = 11.161, c = 21.212 | 2,288 | 1.77 | Uniaxial (-) nω = 1.492(3) nε = 1.475(3)
Max birefringence δ = 0.017 |
[3] | |
Vitimite | Ca6B14O19(SO4)(OH)14•5H2O | monoclinic | P2/m | a = 14.10, b = 19.53, c = 14.05 β = 120.39°=4 | 3,337 | Biaxial (-) nα = 1.532(3) nβ = 1.537(1) nγ = 1.540(1)
Max birefringence δ = 0.008 |
[4] | ||
Harkerite | Ca12Mg4Al(BO3)3(SiO4)4(CO3)5 · H2O | trigonal | R3m | a = 18.131 Å α = 33.46° | 1,614 | Uniaxial nα = 1.649 - 1.653 nβ = 1.649 - 1.653 | [5] | ||
Tatarinovite | Ca3Al(SO4)[B(OH)4](OH)6 · 12H2O | Hexagonal | P63 | a = 11.1110, c = 10.6294 | 1,136 | 1.79 | colourless
Uniaxial (+) nω = 1.475 nε = 1.496 Max birefringence δ = 0.021 |
[6] | |
Sturmanite | Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12•25H2O | trigonal | P31c | a = 11.16, c = 21.79 Z=2 | 2,350 | yellow
Uniaxial (+/-) nω = 1.499 - 1.500 nε = 1.497 - 1.505 Max birefringence δ = 0.002 |
[7] | ||
[Ni(atta)(SO4)0.5]·[B5O6(OH)4] | 514.13 | monoclinic | P21/c | a=9.0512 b=15.2776 c =15.0142, β=90.325° Z=4 | 2076.14 | 1.645 | [8] | ||
Buryatite | Ca3(Si,Fe,Al)(SO4)[B(OH)4]O(OH)5 · 12H2O | trigonal | P31c | a = 11.14, c = 20.99 Z=4 | 2,256 | 1.89 | Uniaxial (-) nω = 1.523(3) nε = 1.532(3)
Max birefringence δ = 0.009 |
[9] | |
Rb3H(SO4)2(B2O3)2 | hexagonal | P63/m | a = 6.502, c = 19.02 Z=2 | 2.803 | [10] | ||||
Fontarnauite | Na2Sr(SO4)B5O8(OH)•2H2O | monoclinic | P21/c | a=6.458 b=22.299 c=8.571 β=103.05 Z=4 | 1,203 | [11] | |||
Y(SO4)[B(OH)4](H2O)·H2O | triclinic | P1 | a=5.9679 b=6.8559 c=10.1698 α=79.608 β=76.673 γ=89.220 Z=2 | 398.02 | 2.502 | [12] | |||
Cs3H(SO4)2(B2O3)2 | hexagonal | P63/m | a = 6.5648, c = 19.5669 Z = 2 | 3.322 | [10] | ||||
La(SO4)[B(OH)4](H2O) | 331.83 | triclinic | P1 | a=6.2808 b=6.8321 c=8.6830 α=82.475 β=76.758 γ=87.300 Z=2 | 359.51 | 3.065 | [12] | ||
Pr(SO4)[B(OH)4](H2O)2 | 351.84 | monoclinic | P21/m | a=6.2359 b=9.5542 c=6.8236 β=93.852 Z=2 | 405.64 | 2.881 | [12] | ||
Nd(SO4)[B(OH)4](H2O)2 | 355.17 | monoclinic | P21/m | a=6.2119 b=9.5328 c=6.7923 β=93.755 Z=2 | 401.35 | 2.939 | [12] | ||
Sm(SO4)[B(OH)4](H2O) | 343.27 | triclinic | P1 | a=6.1467 b=6.7280 c=8.6068 α=81.769 β=76.653 γ=87.259 Z=2 | 342.71 | 3.326 | [12] | ||
Sm(SO4)[B(OH)4](H2O)2 | 361.30 | monoclinic | P21/m | a=6.1601 b=9.5416 c=6.7589 β=93.816 Z=2 | 396.39 | 3.027 | [12] | ||
Eu(SO4)[B(OH)4](H2O) | 344.88 | triclinic | P1 | a=6.1205 b=6.7090 c=8.5844 α=81.713 β=76.680 γ=87.294 Z=2 | 339.40 | 3.375 | [12] | ||
Eu(SO4)[B(OH)4](H2O)2 | 362.89 | monoclinic | P21/m | a=6.1322 b=9.5139 c=6.7343 β=93.683 Z=2 | 392.08 | 3.074 | [12] | ||
Gd(SO4)[B(OH)4](H2O)2 | 368.19 | monoclinic | P21/m | a=6.1148 b=9.5078 c=6.7164 β=93.611 Z=2 | 389.70 | 3.138 | [12] | ||
Tb(SO4)[B(OH)4](H2O)·H2O | 369.87 | triclinic | P1 | a=6.0139 b=6.8972 c=10.1753 α=79.616 β=76.590 γ=89.106 Z=2 | 403.42 | 3.045 | [12] | ||
Dy(SO4)[B(OH)4](H2O)·H2O | 373.43 | triclinic | P1 | a=5.9880 b=6.8728 c=10.1638 α=79.652 β=76.597 γ=89.153 Z=2 | 400.12 | 3.100 | [12] | ||
Ho(SO4)[B(OH)4](H2O)·H2O | 375.86 | triclinic | P1 | a=5.9701 b=6.8570 c=10.1580 α=79.588 β=76.636 γ=89.193 Z=2 | 397.75 | 3.138 | [12] | ||
Er(SO4)[B(OH)4](H2O)·H2O | 378.19 | triclinic | P1 | a=5.9529 b=6.8401 c=10.1553 α=79.598 β=76.642 γ=89.198 Z=2 | 395.54 | 3.175 | [12] | ||
Tm(SO4)[B(OH)4](H2O)·H2O | 379.86 | triclinic | P1 | a=5.9289 b=6.8232 c=10.1422 α=79.531 β=76.663 γ=89.263 Z=2 | 392.40 | 3.215 | [12] | ||
Yb(SO4)[B(OH)4](H2O)·H2O | 383.97 | triclinic | P1 | a=5.9150 b=6.8090 c=10.1454 α=79.541 β=76.669 γ=89.243 Z=2 | 390.82 | 3.263 | [12] | ||
Lu(SO4)[B(OH)4](H2O)·H2O | 385.91 | triclinic | P1 | a=5.8992 b=6.7954 c=10.1322 α=79.551 β=76.691 γ=89.266 Z=2 | 388.53 | 3.299 | [12] | ||
Pb2[(BO2)(OH)](SO4) | 570.26 | monoclinic | P21/m | a=6.982 b=5.3917 c=8.167 β=98.643° | 303.9 | 6.231 | decompose 335 °C; band gap 4.08 | [13] | |
Pb4(BO3)2(SO4) | 1042.44 | monoclinic | P21/c | a=6.9363 b=15.8784 c=9.6053 β=110.770° Z=4 | 989.15 | 7.000 | melt 689 °C; band gap 4.03 eV | [13][14] |